cascades

Much to my surprise I've got a cascade from the cross of Black Velvet Rose
x a no-name (lost label) dwarf that almost certainly had no Cascade
ancestors. Actually I have two cascades from the same batch: one is fairly
compact with smaller darker leaves and flowers almost identical to BV Rose.
The other one is more open and lax with larger leaves, candy-pink flowers,
and extremely floriferous.
Well there's no doubt whence Black Velvet derived its black leaves. I
wonder if anyone else has tried crosses with similar results? I've made
numerous other crosses with both these new cascades and, like any expecting
mother, am awaiting results.
maria